21639740

素因数分解:

$2^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{23021}}^1$

素因数の和:23077

約数の個数: 24

約数和(自身を含む): 46412352

約数和(自身を除く): 24772612

約数列:

[1, 2, 4, 5, 10, 20, 47, 94, 188, 235, 470, 940, 23021, 46042, 92084, 115105, 230210, 460420, 1081987, 2163974, 4327948, 5409935, 10819870, 21639740]

約数ペア:

[(1, 21639740), (2, 10819870), (4, 5409935), (5, 4327948), (10, 2163974), (20, 1081987), (47, 460420), (94, 230210), (188, 115105), (235, 92084), (470, 46042), (940, 23021)]